Alcatraz 2
Marin
Dirt Jump
Alcatraz 2 is an alloy dirt jump mountain bike (2025), by Marin, in the Alcatraz series. It is best suited to a wide range of riders thanks to its fit flexibility, leaning toward a balanced riding position, and is more at home in gravity-focused bike park riding. Its strongest points in the MatchBikes metrics are strong value-for-money versus many similar bikes, good fit flexibility for dialing in rider position, and balanced, versatile speed for everyday riding. That said, what it gives up slightly is more of a flat-to-rolling terrain bias than a climbing focus. Compare this bike across categories on MatchBikes.com to see whether a nearby segment gives you a better fit.
Rating

Score Summary
Performance
Built for speed and efficiency
Fit
Dialed-in Fit & Comfort
Value
Specifications
General
Frame
Drivetrain
Wheels
Brakes
Cockpit
Seat
Geometry
| Measurement | Short | Long |
|---|---|---|
| Stack Reach Ratio | 1.494 mm | 1.349 mm |
| Bottom Bracket Height | 317 mm | 317 mm |
| Front Center | 643 mm | 689 mm |
| Rake | 42 mm | 42 mm |
| Trail | 87 mm | 88 mm |
| Stack | 575 mm | 580 mm |
| Reach | 385 mm | 430 mm |
| Top Tube Length | 600 mm | 646 mm |
| Seat Tube Angle | 69 ° | 69 ° |
| Seat Tube Length | 320 mm | 320 mm |
| Head Tube Angle | 69 ° | 69 ° |
| Head Tube Length | 115 mm | 120 mm |
| Chainstay Length | 395 mm | 395 mm |
| Wheelbase | 1037 mm | 1083 mm |
| Bottom Bracket Drop | 22 mm | 22 mm |
| Standover Height | 370 mm | 400 mm |
| Wheels | 26" | 26" |




























































